Mars 2020 SuperCam transmission spectrometer

Mars 2020 SuperCam transmission spectrometer

Cut-away view of the transmission spectrometer used for remote Raman spectroscopy on SuperCam. Light enters from an optical fiber bundle on which the aperture slit is mounted. The dichroic (left) splits light into two traces. Of the two side-by-side gratings, one is a compound, splitting the light into a third trace, all of which are intensified and collected by a single CCD detector which reads them in three sequential digitization windows.